http://macthemes2.net/forum/viewtopic.php?pid=536587
***UPDATE TO THE USER FIX FOR NOT SEEING YOUR OWN TYPING***
In addition to Following these steps:
1) open /Applications/Adium.app/Contents/Resources/FormattingDefaults.plist
2) set Default Text Color to 255,255,255
3) DELETE Default Background item.
Do these steps as well (fixes it for users on the other end who see white on white):
4) Edit ~/Library/Application Support/Adium 2.0/Users/Default/Formatting.plist
5) change Default Text Color to 0,0,0
This will set your outgoing font color to black, but you will VISUALLY see your font color as white.
-Lytener
